I just love being a gm, so the name was never a big deal to me. Whatever the kids ended up calling me was fine. But, imo, a gm should have the right to be called whatever she prefers, unless the parents have a serious problem with it. Still "Wow" seems very offbeat and self-absorbed, like she wants everyone to constantly be saying how great she is. If I were the parents, I might tell her that's "too odd," and I don't want my child to sound like an "oddball." I would suggest she pick something else and maybe provide her with a list of gm names from the Internet. There are several new ones Iv seen ("Mimi," "Lovey," etc.) I'm sure she could find something avant-guarde or "younger" sounding without being weird.